Is the Skyview Map 270 with 28 day update cycles adequate for VFR navigation or would it be advantageous to purchase the Seattle Avionics, or other alternative database, and to keep it updated as well. I typically use GPS navigation with either direct to, or short flight plans created in the Skyview system. Our flying consists of all day VFR, and most destinations fall within 200 miles of our home airport. Thanks for your thoughts.............Tom